Acid plant



E. L. LAFHSON.

ACID PLANT. APPHCATION FILED FEB. |o. '|91s.

Patented Mar. 23, 1920.

4 Quins-swan l E. 'L. LARISON.

ACID PLANT.

APPLICATION FILED FEB. 10, l9|9 1,334, 384:. Patented Mar.23,1920;

4 SHEETS-SHEET 3.

. LARISON.

ID PLANT. AP'P nub ran. 10, ms.

1,334,3 4. Patentd -.23, 0.

4 s -SHEE framing.

.ELDON L. LARISON, OF AN ACONDA, MONTANA.

ACID PLANT.

Specification of Letters Patent.

Patented Mar. 23, 1920.

Application illed February 10. 1919. Serial No. 276.217.

To all whom it may concern:

Be it known that I, E mon L. LAnisoN, a citizen" of the United States, residing at Anaconda, in the county of Deer-lodge and State of Montana, have invented certain new and useful Improvements in Acid Plants, of which the following is a specification.

This invention relates to an improved form of construction for towers and chainbers for the manufacture of sulfuric acid.

It has heretofore been the custom and considered necessary to support the lead curtain walls and tops of such towers and chambers by means of-independent wood or steel structures, whether or not such towers or chambers, contained interior masonry walls or packing. These methods have involved heavy and expensive framing especially in those cases where it was desirable to use towers or chambers of considerable height.

I propose the construction of towers or chambers in which masonry" walls are used or packing is employed, .in such a way that the lead sheathing of sides and tops with the necessary light framing to which the supporting lead straps are, attached. shall be supported on. the masonry walls.

This method of construction is especially adapted to large units in which it is necessary to use towers or chambers of such height that simple and cheap framing is not adequate. In standard methods of construction the wood or steel members to which the lead sheets are directly attached are usually light and small, but they in turn must be su ported by heavy wood or steel t is the object of this invention to avoid the use of these latter heavy and expensive frames in building high structures of this kind. I propose however to use the standard methods of supporting the lead sheets in so far as they are snita' e.

In the accompanying drawings,-

Figure 1 is an elevation. partly in section, the section being taken on plane AA of Fig. 3; a 4

Fig 2 is a lan, partly :in 366M011. the section being tali'en on plane C-C of Fig. 3;

Fig. 3 is a sectional elevation on plane BB of Fig. 2';

Fi 4 is an enlargei'l end view of the corbe support Fig. 5 is an enlarged front view detail oi the corbel support;

Fig. 6 is a plan of Big. I.

The sulfuric acid chamber itself comprises end walls 1, sidewalls 2 and transversely arranged interior masonr walls 3, all resting on the foundation 4. he chamber ma be provided with a masonry packing 5. his entire structure is surrounded by a'lead eurtain 15 which is supported on a relatively light framework. This framework 'eomprises beams 10 supported by the masonry in the manner hereinafter described, these beams extending along the sides and ends of the chamber. As shown, the beams 10 are arranged about midway the height of the chamber; but where higher chambers are desired two or more such. beam supports spaced at proper distances may be provided. The horizontal beams 10 are supported as shown in Pigs. 3 and l by one or more corbel supports 17 extending outwardly from the ends of the transverse walls 3, the lead curtain however extending between the beam 10 and the corbcl 17. In order to prevent the internal. gas pressure from pushing the beams 10 off the corbel su ports,.truss rods 20 are anchored at their l ziwer ends in the foundation 4, as shown in Fig. 3, and at their upper ends are secured to the ehanne'. bars 40. Bearing against the beams 10 are timbers 2:2 provided on their outer ends with caps 21 secured by bolts 23. The truss rods '20 pass over these caps and are. given the proper tension by means of theturn buckles 24.

' The intermediate framework to which the lead curtain is secured by lead straps 16 com? prises a series of vertical struts 13 having their ends secured to horizontal members 1818 and 19-19. The members 1818 are secured, as by spiking, to beam 10; and of the two members 19 .19. the upper one is secured to the beam 10 and the lower by dowel pins or otherwise to the'concrete foundation.

[longitudinally extending straps or bars 9 and 11 extend entirely around the structure and serve to hold the vertical struts 13 in place.

The roof portion of the curtain is' supported by longitudinally extending bars 12 to which it is secured by lead straps 16. The e bars 12 extend from a cross piece .7 supported on the upper ends of the struts 13 to channel bars A). which are preferably arranged immediately over the transverse walls as shown in Fig. 1. so as to be supported thereby. The roof structure may be braced by rods 14;, as shown in Fig. 2, and

, channel bars 40 an also by fastenin channel bars lOb the lead curtain is supported is itself thus directly carried by the foundation and the interior masonry structure of the sulfuric acid chamber. a 1

The form of construction above described is especially adapted to large units. where it v1s necessary to use chambers of such height that simple framing is not adequate, and heavy framing becomes very expensive. In the cases of towes' or chambers of small horizontal section, small shelves of corbel construction may be provided at suitable vertical intervals on the corners of the masonry'lining walls for the support of the horizontal members'of the frames to which the lead is attached.

In order to avoid dead spaces edevoid of gas and acid clrculation, in which s aces com ounds of nitrogen in urious to lea are like y to be formed, it will be noted that a nausea space of several inchesis left between the lead sheathingand the interior masonry side walls, in which space gas or acid may he allowed to circulate.

I claim:

1. A chamber for use in the manufacture of sulfuric acid comprisin interior masonry walls, and h lead sheat ing supported by said Walls and by a framework to which the sheathing is hnnected, said framework com )rising ineniliers supported by said wal s.

2. A chamber foflduse in the manufacture of sulfuric acid as laimed in claim-1 in which members of the framework are sup ported 0n corbeled shelves extending from the interior masonry walls.

3. A chamber for use in the manufacture of sulfuric acid as claimed in claim 1 in which the framework is held in position by means of tensioned truss rods.

t In testimony whereof, I affix my signaure.

, 'ELDON L. LARISON. 

